Pang, Xiaolei; Bassinot, Franck; Sépulcre, Sophie (2021): Pulleniatina obliquiloculata Mg/Ca-derived thermocline water temperature records over the last two glacial-interglacial cycles from sediment core MD98-2165 off southern Lombok Strait [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.929574
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Abstract:
We present a Pulleniatina obliquiloculata Mg/Ca-derived thermocline water temperature record (TWT) covering the last 270,000 years from sediment core MD98-2165 (9.65S, 118.34E) at the south of the Lombok Strait, one of the main exits of the Indonesian Throughflow (ITF) into the Indian Ocean. The sediment core MD98-2165 was retrieved at a water depth of 2100 m during the IMAGES IV cruise of the French R/V Marion Dufresne. For measuring P. obliquiloculata Mg/Ca ratio, Core MD98-2165 was sampled at 4-12 cm interval during the 110-3450 cm depth interval, corresponding to 1.5 – 270 ka. About 30 tests of P. obliquiloculata were picked from the 250-355 µm size fraction. Samples were cleaned without using reductive step. Mg/Ca ratios were converted to temperatures by using calibration equation: Mg/Ca = 0.328 exp (0.09*T). Mg/Ca ratio of P.obliquiloculata vary between 1.6 and 3.1 mmol/mol, corresponding to TWT ranging between 17.8 and 25.1 °C. This reconstructed TWT record from sediment core MD98-2165 is used to study ITF change at orbital and glacial-interglacial timescales.
Keyword(s):
Related to:
Pang, Xiaolei; Bassinot, Franck; Sépulcre, Sophie (2021): Indonesian Throughflow variability over the last two glacial-interglacial cycles: Evidence from the eastern Indian Ocean. Quaternary Science Reviews, 256, 106839, https://doi.org/10.1016/j.quascirev.2021.106839
Coverage:
Latitude: -9.650000 * Longitude: 118.340000
Minimum DEPTH, sediment/rock: 1.10 m * Maximum DEPTH, sediment/rock: 34.14 m
Event(s):
MD98-2165 (MD982165) * Latitude: -9.650000 * Longitude: 118.340000 * Elevation: -2100.0 m * Recovery: 42.3 m * Campaign: MD111 (IMAGES IV-IPHIS III) * Basis: Marion Dufresne (1995) * Method/Device: Calypso Corer (CALYPSO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Pang, Xiaolei | Geocode | |
| 2 | AGE | Age | ka BP | Pang, Xiaolei | Geocode | |
| 3 | Pulleniatina obliquiloculata, Magnesium/Calcium ratio | P. obliquiloculata Mg/Ca | mmol/mol | Pang, Xiaolei | ||
| 4 | Thermocline water temperature | TWT | °C | Pang, Xiaolei |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
818 data points